moving parts != comfort, which is paramount when it comes to mattresses. For me (and a lot of people I know), having springs is actually an issue. The springs w

moving parts != comfort, which is paramount when it comes to mattresses. For me (and a lot of people I know), having springs is actually an issue. The springs wear off, the mattress begins to sag and not to mention the back aches. So its not as simple as -- simple foam mattresses should cost lower just because they have less raw materials than a spring coil one.